Every year the American Institute of Architects hosts a 3 day conference, This year the AIA conference was held in Las Vegas.
Substantial completion is the single most important date of any project.
There are a number of organizations around the world that also offer standard construction forms.
The AIA is the predominant source for standard forms, but it isn't the only source.
This latest 2017 edition of the AIA Contract Documents is the sixteenth edition of these documents.